Abstract：
:A novel bacterium, Ochrobactrum sp. T, capable of simultaneous debromination and aerobic mineralization of tetrabromobisphenol-A (TBBPA), was isolated from a sludge sample collected from an electronic-waste recycling site. The bacterium exhibited maximal debrominase activity at pH 6.5, 35 °C, and 200 rpm in Luria-Bertani culture medium. Initial TBBPA concentration and pH had more significant effects on degradation efficiency than those of temperature and inoculum size. Degradation and debromination efficiencies of 91.8% and 86.7%, respectively, were achieved within 72 h under optimized conditions of 35 °C, pH 7.0, inoculum volume of 25 mL, and TBBPA concentration of 3 mg L⁻¹. In addition, a 35.6% decrease in total organic carbon was observed after the degradation of 5 mg L⁻¹ TBBPA for 120 h. Eight metabolic intermediates were identified during the biodegradation of TBBPA. This study is the first report to propose a one-step process for TBBPA debromination and mineralization by a single bacterial strain.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
An T,Zu L,Li G,Wan S,Mai B,Wong PKdoi
10.1016/j.biortech.2011.06.080subject
Has Abstractpub_date
2011-10-01 00:00:00pages
9148-54issue
19eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00907-2journal_volume
102pub_type
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